2013-03-30 00:02:51 [SEVERE] Could not pass event VehicleDamageEvent to MinecartMania v2.0 Beta4
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427)
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
	at net.minecraft.server.v1_5_R2.EntityMinecartAbstract.damageEntity(EntityMinecartAbstract.java:121)
	at net.minecraft.server.v1_5_R2.EntityHuman.attack(EntityHuman.java:854)
	at net.minecraft.server.v1_5_R2.PlayerConnection.a(PlayerConnection.java:1102)
	at net.minecraft.server.v1_5_R2.Packet7UseEntity.handle(SourceFile:36)
	at net.minecraft.server.v1_5_R2.NetworkManager.b(NetworkManager.java:292)
	at net.minecraft.server.v1_5_R2.PlayerConnection.d(PlayerConnection.java:110)
	at net.minecraft.server.v1_5_R2.ServerConnection.b(SourceFile:35)
	at net.minecraft.server.v1_5_R2.DedicatedServerConnection.b(SourceFile:30)
	at net.minecraft.server.v1_5_R2.MinecraftServer.r(MinecraftServer.java:578)
	at net.minecraft.server.v1_5_R2.DedicatedServer.r(DedicatedServer.java:225)
	at net.minecraft.server.v1_5_R2.MinecraftServer.q(MinecraftServer.java:474)
	at net.minecraft.server.v1_5_R2.MinecraftServer.run(MinecraftServer.java:407)
	at net.minecraft.server.v1_5_R2.ThreadServerApplication.run(SourceFile:573)
Caused by: java.lang.NoClassDefFoundError: org/bukkit/craftbukkit/v1_4_R1/entity/CraftMinecart
	at com.afforess.minecartmania.entity.MinecartManiaWorld.getOrCreateMMMinecart(MinecartManiaWorld.java:68)
	at com.afforess.minecartmania.listeners.CoreListener.onVehicleDamage(CoreListener.java:132)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
	... 16 more